Fountain pen



Dec. 17, 1929. c. E. MARSHALL FOUNTAIN PEN Filed Nov. 6, 1926 Patented Dec. 17, 1929 UNETE TATES FTEN FFECE CLINTON E. MARSHALL, OF BROOKLYN, N EW YORK FOUNTAIN PEN Application filed November at right angles to the pen barrel, and when in such position is moved inwardly and outwardly through the barrel to compress the flexible well contained therein, in the operation of filling the pen; a further object being to provide a bar disposed between said plunger and the flexible well and extending longitudinally of the well, whereby the depression of the plunger will cause the well or sack to be fully or partially compressed; a still further object being to provide means for pivotally coupling the plunger to said bar; and withvthese and other objects in view the invention consists in a device of the class and for the purpose specified which is simple in construction, efficient in use and which is constructed as hereinafter described and claimed.

The invention is fully disclosed in the following specification, of which the accompanying drawing forms a part, in which the separate parts of my improvement are designated by suitable reference characters in each of the views, and in which Fig. 1 is a side and sectional view ofthe barrel of a pen showing my improved device mounted in connection therewith, and indicating the method of its use 2 is a section on the line 2-2 of Fig. 1;

Fig. 3 is a view similar to Fig. 1 showing only a part of the construction;

Fig. 41 is a view similar to Fig. 3 showing a modification; and,

Fig. 5 is a view similar to Fig. 4l, showing parts in a different position.

1n the drawing 10 represents a barrel or body portion of a fountain pen in which is supported a flexible or compressible sack or well 11.v and at 12 I have shown a spring bar extending longitudinally of the well 11, and one end of said bar being bent in U-form, as seen at 13, to lit within the closed end of the barrel 10 to give spring properties to the 6, 1926. Serial N0. 146,681.

bar 12 and normally support the same adjacent the wall of the barrel 10.

The wall of the barrel 10 is provided with an elongated aperture 141 extending longitudinally thereof and in which a manually operated plunger 15 is normally supported, one end of the aperture 14 terminating in a semicircular recess 16 to permit of the engagement of the reduced end 17 of the plunger 15 and to permit of the raising of said plunger in i the position shown in full lines in Fig. 1 of the drawing. Supported in an annular groove 18 in the bore of the barrel 10 and adjacent one end of the aperture 14 is a ring 19 which is arranged in notches 2O opening outwardly through the side walls of the plunger 15, said plunger being U-shaped in form in cross section, and the inner end of the plunger 15, when in the position shown in full lines in Fig. 1 of the drawing, rests upon the bar 12 within the side flanges 12a of said bar. 1n the construction shown, the end portion 13 of the bar is composed of an independent part having spring members which extends through the channel of the bar 12 at one end tiereof, and is secured to the bar as seen at 13a, note Fig. 2.

It will be understood that the si ring action of the bar 12 will be such as to support'the plunger' 15 within the aperture 111 in horizon tal position, as indicated in dotted lines in Fig. 1 of the drawing, and when the pin is in normal use, and when it is desired to refill the sack or well 11, the plunger 15 is raised into tie position shown in Fig. 1 of the drawing and moved inwardly into the position shown in full lines in Fig 2 of the drawing to compress the well or sack 11 by the bar 12, -in which operation the plunger 15 is guided Vby the ring 19poperating in the notches 2O and upon the outer edges 22 of the side walls of the plunger 15. The outward movement of the plunger 15 is controlled by the pressure of the hand until the sack or well 11 has been fully expanded and filled, or partially filled with ink, after which the plunger 15 is returned into the position indicated in dotted lines in Fig. 1. From the foregoing it will be apparent that I provide a simple, strong` and durable and positive functioning means for compressing the well or sack of the pen in the lilling operation.

It will also be apparent that in the vertical movement of the plunger, the same is moved slightly back and forth or longitudinally of the aperture 14, the inner ends 23 of the side walls of the plunger' being sufficiently wide to prevent accidental displacement of the parts.

In Figs. 4 and 5 of the drawing I have shown a modification in which a plunger 24, similar in general construction to the plunger 15 shown in Figs. 1 to 3, is employed, the plunger' having notches 25 in the side walls thereof and instead of having an open inner end, an end wall 26 is provided on the plunger, said wall having an aperture 27 to receive a hook-shaped finger 28 on a bar 29, the finger 28 being preferably fashioned from the material of the bar but may be formed in any desired manner. With this construction the ring 19 operates in the notches 25 of the plunger 24, as in the construction shown in Figs. l to 3 of the drawing and the plunger is directly coupled with the bar 29 to retain said bar in proper position in the barrel of the pen, especially when the bar is of the floating type as seen in Fig. 4 of the drawing, instead of the spring type shown in Figs. 1, 2 and 3 of the drawing.

In the construction shown in Figs. 4 and 5, the sack or well employed in the pen is relied upon to hold the parts in the position shown in Fig. 5 of the drawing and retain the plunger 24 against accidental displacement. It will'be understood that a resilient bar similar to that shown in Fig. 1 may be employed, if desired, and the operation of the plunger 24 will be the same as the plunger 15.

It will be apparent that my invention is not necessarily limited to the specific construction of the plunger herein .shown and described, nor the manner of its coupling or use in connection with a bar for compressing the well or sack of the pen, and other changes in and modifications of the construction herein shown and described may be made, within the scope of the appended claims, without departing from the spirit of my invention or sacrificing its advantages.

Having fully vdescribed my invention, what I claim as new and desire to .secure by Letters Patent, is

1. The combination with the barrel of a self-filling fountain pen including a compressible sack within said barrel, a bar within the barrel and adapted tocompress said sack, and an elongated aperture in the wall of said barr-el, of aplunger pivotally, slidably and detachably mounted in connection with the apertured portion of said barrel, a ring arranged within the barrel adjacent one end of said aperture, said plunger being in the form of an elongated body of channel cross sectional form, the side walls of said channel body at one end thereof having recesses opening outwardly through the edges of said walls and arrange-d at an inclination to the longitudinal plane of said body and in which said ring is arranged to pivotally support the plunger in connection with said barrel, and the recesses in said plunger permitting the radial movement of the'plunger on said pivot and with reference to the barrel of the pen in the attachment and detachment of the plunger, and said bar cooperating with the plunger to maintain said plunger in the different positions thereof.

2. The combination with the barrel of a self-filling fountain pen includinOr ay compressible sack within said barrel, aebar within the barrel and adapted to compress said sack, and an elongated aperture in the wall of said barrel, of a plunger, pivotally, slidably and detachably mounted in connection with the apertured portion of sai-d barrel, a ring arranged within the barrel adjacent one end of said aperture, said plunger being in the form of an elongated body of channel, cress sectional form, the side walls of said channel body at one end thereof having recesses opening outwardly through the edges of said walls and arranged at an inclination to the longitudinal plane of said body and in which said is arranged to pivotally sup port the plunger in connection with said barl el, the recesses in said plunger' permitting ie radial movement of the plunger on said ivot and with reference to the barrel of the en in the attachment and detachment of the plunger, said bar cooperating with the plunger to maintain sai-d plunger in the different positions thereof, and the inner end of the plunger being provided with a tongue member arranged at right angles to the longitudinal plane thereof and said bar having a linger cooperating with said tongue member to couple the plunger with said bar.

In testimony that I claim the foregoing as my invention I have signed my name this 5th day of November, 1926.

CLINTON E. MARSHALL. 

